CMMVC6972E The command cannot be initiated because the maximum number of extents for an MDisk would be exceeded.
Explanation
Each MDisk has a limited number of extents, which
varies according to the extent size set by the mdiskgrp, this limit
would be exceeded by this command.
User response
Create a different pool with a larger extent size by using mkmdiskgrp. Then, retry
the command by using mdiskgrp.
Ensure that you are familiar with the maximum configurations of the Storwize® V3500. Search for the term "configuration limits and restrictions" in the Search support and downloads search box at the www.ibm.com/support website. The relationship between extent size and the maximum MDisk capacity is shown in the Extents table.